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29 lines
859 B
Python
29 lines
859 B
Python
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"""Memory watchdog: periodically read the memory usage of the main test process
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and print it out, until terminated."""
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# stdin should refer to the process' /proc/<PID>/statm: we don't pass the
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# process' PID to avoid a race condition in case of - unlikely - PID recycling.
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# If the process crashes, reading from the /proc entry will fail with ESRCH.
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import os
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import sys
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import time
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try:
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page_size = os.sysconf('SC_PAGESIZE')
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except (ValueError, AttributeError):
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try:
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page_size = os.sysconf('SC_PAGE_SIZE')
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except (ValueError, AttributeError):
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page_size = 4096
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while True:
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sys.stdin.seek(0)
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statm = sys.stdin.read()
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data = int(statm.split()[5])
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sys.stdout.write(" ... process data size: {data:.1f}G\n"
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.format(data=data * page_size / (1024 ** 3)))
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sys.stdout.flush()
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time.sleep(1)
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